Loading content, please wait..
loading..
Logo
Version 3.20
or
Publication Type J
Authors Guillo, A., M. A. Alonso and A. Juan
Title New insights into seminal and stomatal morphology and their contribution to the taxonomy of the Old World succulent perennial Salicornioideae
Source Plant Systematics and Evolution
Author Keywords Amaranthaceae Chenopodiaceae Sarcocornia Arthrocnemum Halocnemum Seeds Stomata Mediterranean basin sarcocornia chenopodiaceae plant zonation south-africa salt-marsh halophytes phylogeny leaf proteaceae revision density
Abstract Seminal and stomatal morphology of three succulent halophyte genera (Sarcocornia, Halocnemum and Arthrocnemum) around the Mediterranean basin and surroundings areas were investigated. Scanning electron microscopy (SEM) investigations showed well-different seminal coat ornamentations among the studied taxa. Both Arthrocnemum macrostachyum and Halocnemum strobilaceum do not show trichomes. Conversely, the species Sarcocornia perennis and S. fruticosa can be easily identified by the presence of long curved hairs against papillae or short conic hairs, respectively. Because most of the herbarium vouchers of Sarcocornia lack seeds, and thus the permanency of seeds on plants is quite short, an alternative vegetative character as stomata was also studied using SEM and light microscope. The detailed stomatal morphological features were analysed for the first time to infer taxonomic relationships among these perennial halophytes. Stomata are constantly paracytic for the four studied species, but two morphotypes were identified related to the level arrangement of guard cells, named as sunken and prominent stomata, respectively. Sunken stomata are found in A. macrostachyum, H. strobilaceum and S. fruticosa, whereas prominent stomata are only characteristic for S. perennis. Besides, we have found somehow relationships among the ecology of these plants based on the frequency of floodings and the observed morphology and density of stomata. Nonetheless, each observed morphotype is a stable character, without any influence of climate or environmental conditions. As a result, seminal coat ornamentation and stomata morphology are the two most reliable characteristics for discriminating Mediterranean halophytes taxa, especially related to Sarcocornia taxa.
Author Address [Guillo, Ana; Angeles Alonso, Ma; Juan, Ana] Univ Alicante, Inst Biodiversidad CIBIO, E-03080 Alicante, Spain. Juan, A (reprint author), Univ Alicante, Inst Biodiversidad CIBIO, POB 99, E-03080 Alicante, Spain. ana.juan@ua.es
ISSN 0378-2697
ISBN 0378-2697
29-Character Source Abbreviation Plant Syst. Evol.
Publication Date Jun
Year Published 2013
Volume 299
Issue 6
Beginning Page 1185-1203
Digital Object Identifier (DOI) 10.1007/s00606-013-0788-8
Unique Article Identifier WOS:000319477700014
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed